Windmill



March 17, `1925.

O. OLSSON WINDMILL' Filed Nov. 18, 1922 4 Sheets-Sheet l WIT/VESSES l/VL/ENTH or'd Qassam M HNEYS March 17, 1925.

O. OLSSON WINDMILJ..v

Filed Nov. 18, 1922 4 sheets-sheet 2 INVENTOH -Ored O Z 850m WITNESS/58 o. oLssoN March 17, 1925.a

WINDMI'LL mied .Novi-18,

lllllllllllllllh [NVE/WUR Ore d, O Z/Ss o ro monNErs March 17, 1925. 1,530,399

o. OLssoN WINDMILL l Filed Novfla, 1922 4 sheets-sheet 4 u lm/Enron Oreal' 01.56011/ 7.255%0 nz t' f 'Arron/ms' i WITNESSES 30 templates'an improved governor supporting l featheriiig of'thefblades; the governor brac- Patented YMar. 17, '12925.l

'A'UNiT-ED sTATEs I'lhtriin'i oFFlCE.-

' oaiin oLssoN, oroanivn'isaasxa;

' WINDMILL.

Appiicanon filed November is, i922.v seriai No, 601,719. f

To all whom it may concern:

Be it known that I, Onno OLssoN, a v

citizen of the United States, and a resident of Oid,.in the county. of Valley and State of Nebraska, havey invented a new and 1inproved lfilndinilhof ywhich the following is a full,l clear, and exact description.

l rThis inventionhas relation to windmills and has' particular reference-to certain `iinprovenieiits n pon'devices of a similar nature disclosed in United States Letters Patent Nos. 626,559 and 1,360,013, granted respectively oii June f5, `1889, and November l23,k

, The present invention has to do particularly with the improved construction the governor which and mounting kof control 'the operates to automatically a'nd bracing construction which is extremely strong and durable, -butvwhicli is very light in weight. y I I c `vThe vinvention furthermore contemplates an automatic governorV controlling devicey whichoperates to increase the resistance as the lblades are feathered whereby toV prevent the throwing of the mill out of operation "by a sudden or temporary blast of `wind of very high velocity whereby to relievethe driving mechanism of unnecessaryfstrains caused by intermittent starting and` stop-v ping.

. full extent indicated by thelgeneral meaning p 'pressed `With the above -recited and otherv objects in view,v the invention resides in thev novel constructionset forth in the following specification, particularly pointedr out in the'appended claims and illustrated in the accompanying drawings, it b eiii'gv understood that the rightis reserved to embodiments other than those. actually illustrated herein to the of the terms'in which the claims are exy In the drawings- Figure 1 is a perspective View of a windmill constructed in accordance with the invention and illustrating the blades disposed at 'a normal pitch for a wind ofv average. velocity.'l y

Fig. 2 is asimilar view illustrating the vblades when feathered under the action of a wind ofliigh velocity.

Fig. 3 is a fragmentary plan' view with the blades removed and illustrating the governor control.

Fig. is a fragmentary lsectional view taken approximately on` the line 1 4 of F ig. 3. l I

Fig. is a fragmentary transverse sectional view talen approximately/on the line Fig. 6 is a transverse'v sectional view taken Iapproximately on the line 6 6 of Fig. y3.'

t Fig. 7 is an enlarged detailside elevation ofthe automatic governor controlling. device Fig. 8 is a similarv view illustrating the in its norma-l position when the mill is` operating in a. moderate wind;

position of the automatic governor control` ling device when the. mill is operating under the influence of a: strong wind, thus effecting f a suiiicient featlieriiig of the blades to reducey the speed ywithout actually stoppingthe mill.

Fig. 9`is afsimilarfview to Fig. 7 illustrating theinitial'mrovement of the governor controlling' device i manipulated by hand.

when the same is Fig. 10 is asimilar view illustrating'the position yof the governorcontrolling device when the mill has been thrown out of operation by hand.`

' Referring lto the drawings by characters of reference .10 designates" the framework of ,Completely the'mill provided at its nupper end withv a housing 11 which in turn is formed with `atubular bearing y 12 extending therethrough and its bearingl 12maybe swivelly supported vfrom the lframework 10 if desired and provided withsuitablemeanssuch as a vane for normally facing the mill into the wind, not illustrated for the reason that'such'features forni .nol part ofthe invention and n are common to practicallyall windmills." A

bearing 12 which `bearing is provided adj a'- cent the outer end with an anti-friction or .rollerbearing 14.' The inner end fof the and `projecting therefrom." The housing 11 drivey shaft 13 extends through the tubular drive vshaft has securedithereto a pinion whichis-designed :to cooperate with suitable mechanism attached to the pump rod. rl`he outer end of the drive shaft extends beyond the tubular bearing 12 and has secured thereto, lor turning` movement therewith, the.` hub 16 of the wheel or propeller which includes the spokes 17 disposed radially therefrom and the sails or blades 18 mounted for turning movement on the spokes. The blades are connected tov each other for simultaneous turning movement by connecting rods 19. The vhub `16r is further `provided with diametrically disposed Qppositely offset arms 20 which constitute bearingv arms for the governor. levers 21 pivoted to the extremities of .the bearing `arms as at 22. The governor levers are in turn linked 4b v the rods 23 to theblades or sailsas at 24- whereby outward ortinward swinging movement of the governor levers will eHect respectively aturningr of `the -bladesor sails 1801i the spokes to vary the pitch of the blades. lTi/Yeights 25 are mounted for longitudinal sliding adjustments .on the governor levers 21 and saidy weightsai-e retained in their adjusted positions by set screws 26. In order to steady and, bizace theouterends of the spokes and retain the Samein fixed relation to each other, connecting rods 27are provided. ln

y order-to steady, brace and support the outer extremities of the ,governor levers while at the same tnneadml-t yof their swingangmovement, a rod 28 is attached as at.29 `to the Iruiter, end of each: governor lever,saiil lrod beingswi-ngingly connecte-d as at '30 with a v,

bearing-member which bearing member is hel-d, yin relatively fixed =relation to the spokes bythree brace rods -to the -outer ends f of which the `member The governor levers which voperatefby centrifugal torce are normally retained in their normal inactive position by a` spring 33 which .is interposed between the head 341 at the, eXtreme forward. end ol thedrive shalt and aslidingsleeve mounted on the drive shaltbetween-tl-ie outer endo the same and the hub 16. The sliding sleeve 35 is connected by linkstitdthe inner extremities 37 ,of the governor levers. A second spring 38 is inteigposed between r the slidiifig` sleeve .35 and ythe hub 16rto `assist in-absorbing the shook i upon thereturn o't-the governouleve-rs to normal position after outward swingingr movement.

1n yorderto provide automatic means Jfor retarding or restrainingtheaction ot the governor 'and :prevent acomplete feathering otfthevbladesdue to sudden drafts of `increased velocity and short duration. a second ,.sliding,y sleeve 39 is provided. The sleeve .39 isgmounted on a tubular bearing and is axially movable thereon between the y 31 is connected, d, whilethe inner endsthereof lare connected. respectivelyto the .rods ,27,aud the spokes.

shoulder el@ itormed by the enlarged end ot the tubular bearing which houses the antinected by links 12 to the inner extremities 3710i' the governor levers, said links being; connected to a ring` or annulus l-l which is lrotatablein theannular groove 4:4: on the sleeve 39. r1`he tubular bearing 12 is provided with a longitudinal groove. Ll5 in its outer periphery within which ay rod 46 is slidable,l said rodbeing,- connected to the sleeve 39 and serving to prevent rotation ot the sleeve. The rod ,46 extends through thi` housing; 11and is-connected to onel arm 4157 of a hell crank lever-116 Awhich is fulorumed as atltl to a bracket 50 extending rearwardly 'trom the housingll. The opposite arm 51 o' thebell crankhas pivoted to its .free end as at 52 a` leg 53 and-the free extremity of said leg is provided with laterally disposed aligned bearing` ears vin. which a shaft- 55 is mounted for longitudinal movement. The shaft is Aprovided with a semisphericalhead 56-at its lower extremity which is adapted lto bear against the lug` 561 of the bracket 50. A coiled expansion spring' 58 is interposed between the head 56 and theA lowermost bearing,` .ear to normally ei- 'lfeet relative separation between the head and the leg 53,. said separating movement being arrested yby Aavstop pin 59 which en- `:gages with the uppermost bearing ear. `The upper pi-voted end of `the-leg,53 is provided with right angularlydisposed extensions 60 andA 61,thef1ormer having,` swivelly connected thereto a rod 62 which passes through a bearing lug, 63 secured to the-arm v51 oit the bell crank lever. The louter tree end o t theroduis provided-,with a stop. nut 64: and equalizing' springs 65 -and66. encircle the rod 62 andV are vinterposed respectively between the connected end of the rod. and the bearing flugand the stop nut 64 and the-opposite side of. the bearing' lug. The angularly. disposed extension (S1-has connected thei-eto/a depending rod.l 67 'by Ameans ot which manual. featheringr `ol: the blades may be aceomplishedY byx av person on the groundfat the. base of -tlie.if1:a.me structure 1 0. The ar1n5,1 lol ythebell crank is provided -with awstop shoulder. 68 which constitutes a positive stop with which the leg 53 initially engages zw-hena downward ypull is exerted onthe rod. 67.4 They spokes and 'sails oimblades are bra-eed vby angularly discenter of rotation of the'propeller or wheel wherebythe blades aredisposed at a proper pitch to obtain a maximum force. from the wind. l/Vliere the velocity ofthe wind increases vabove the average to such an extent that the mill would race, the weightedgov- `eriior levers will be swung by centrifugal force against the action'of the spring .33

due to the connection of the same by the vrods 23 with the bladesor sails 18, the

blades will be feathered or turned to iii-y crease their pitch and reduce 'the surface the blades and stopping of the mill.

lpresented to the wind to slow the action of the mill. Then yblastsy of windk of high velocity and short duration occur, the automatic governor controlling device is vlorought into play .to constitute an auxiliary means for preventing the complete feathering of The operation is as follows:V The outward swinging of the goveriiorlevers 2l due to the increased speed of the mill will initial- 1 .ly operate against the spring 33 thus draw- `ing forward on the links 42 which are connected to the sliding sleeve r39. The initial forward, movement ofthe sliding sleeve 39 exerts a pull on the rod 46v thus swinging the bell crank 48 until the head 56 engages with the bracket lug 50a. At this point the auxiliary spring 58 will be brought into play to increase the resistance of the swingf absorb the shock of the return of the blades to their normal pitch. In'event it is desired to manually throw the mill .outnof operation,` the operator grasps the rodY 67 n and pulls downwardly thereon, the downward pull on the rod 67- iiiitially effecting a swinging movement of the leg 53`against the stop shoulders 68 at wliichpoiiit the head 56 will be disposed in sucha position as to clear the bracket lug 50a when a further downward pull vis exerted on the rod- 67.

lVhen afurtlier pull iseXerted downward on said rod 67 the bell crank will be swung on its pivotal point 49 to throw the arm 47 thereof forwardly, thereby effecting a forward shifting of the sliding rod 46anda forward sliding movement'of the sleeve 39 which in turn will throw the governor levers 21 l' outwardly ,to completely feather ythe blades and stop the mill.' The initial swinging. of the-legi?) against the stopvshouldery 68 causes a compression of the spring 66,

which' spring lwill function, when the rod 67. is released to return they legv 53 to its 'normal position as illustrated in Fig. 7.

I claim: f i yLThe combination with a windmill, of

governor arms controlling the angular disposition of the bladesof the wind wheel, a

link longitudinally movable by said gov- Vernor arms, a bell cranklever connected at one end to said link, a leg on said bell crank lever adapted to engage the windmill frame, and meanscarried by said leg for yieldably limitingthe operating movement ofthe governor whereby to provide'a supplemental retarding action to lthe swinging of the blades.

2. In a windmill comprising a 'rotary drive shaft, a wheel including a hub secured to the drive shaft for rotation therewith, `spokes radiating from the hub and` blades or` sails mounted on the spokes `for turning movement, ay centrifugal speed govi ernor including governor arms pivoted to thehub `for rotation therewith, a swinging brace connected respectively with the spokes and the free outer ends of the governor levers, anda connection between the govei'nor arms and 'the blades for controlling the. turning inoven'ientfof the saine to vary the pitchof the blades.

kdisposition ofthe blades of the wind wheel, a bell crank and( operative connection betweeny one arm ofthe bell crank and the governor arms, a leg swingingly carried by the free end of the other arm of the bell The combinationv with 'aivin'dmilh of `governo-r arms for cont-rolling the angular crank, a spring pressed footv normally proi,

jecting from the free end of the leg, means for maintaining the legI in a predetcrn'iined normal relation to the bell crank, a lug on 'n the windmill vframe disposed in the normal' path of movement of the foot and yengageable thereby to yieldably limit and retard the movement of tl'iefbell crank, the governor arms andA turning' of the blades, and manually operable'meansconnected with the leg adapted upon initial manipulation toswingr iin` the leg whereby to disposethe foot in a posi- Y tion to escape the lug upon further manipulation ofsaid manually operable means.

y 4. The combination with a windmill, of

governor arms for controlling the angular disposition of the blades ofthe wind wheel,

a bell crank and operative connection between one .arm of the bell crank and the governor arms, a leg swingingly carried by the free end of the other arm rof the bell crank, a spring pressed foot normally projecting from the free end of the leg, means for maintaining the leg in a. predetermined normal relationtothe bell crank, said means consisting ofv an aperturedbearing element on the latter bell crank arm, an apertured extension von the leg, a rodr extending tliroughsaid apertured elements, abutments l at theJ opposite ends ofthe rod and coiled expansion springs surroundingl the rod and interposed respectively between the bearing' 'element and the extension and between the bearing element and the abutment, a 'lugon the Windmill frame disposed in tlie normal path of movement ot' the i''oot andeno'ageable thereby to yieldably limit and retard the movement of the bell crank, the governor arms and turning of the blades, and manually operable ine-ans connected with the leg' adapted upon initialv manipulation to swing the leg;i whereby to dispose 'the foot in a position to escape the lug upon Jinn-lier manipulation of said manually operable means.

5. The Combination ivitli a Windmill including a centrifugal governor for controlling` the angular disposition of the blades ol the Wind Wheel, of means 'l'or automatically controlling the governor and for niannelly 'i'eathering the blades to stop the wheel, 'comprising a bell crank, a connection between one arm of the bell crank and the governor, a leg pivoted to the iree end of the other arm of the bell crank, a 'oot carried by the free end of the leg, means for noi"- m'al'ly projecting the foot beyond the free end of the leg, a lug on the Windmill frame, means tor normally maintaining the Yloot in a position to engage the lug upon movement of the bell crank by the governor, and manipulating means connected With the-leg' vand Vadapted upon initial manipulation to b u )on further'maninilation of said means i the/bell 'cranllis capable of movement to allowv for the full featliering of thel bla-des to stop the Wheel.

6. The combination with a Windmill including a centrifugal governor for controlling 'the angular disposition of the blades of the Wind Wheel, of fineans 'for automaticallycontrolling the governor and for manually tentheringtliebladesto stop the Wheel, comprising, a bell Crank, a connection be* tween oneI aiiu o'lvthe ibell crank and the governor, a leg"l pivotedto the free end of the other aiin of the bell crank, a foot can ried by the free end oi" `the leg, means for normally iLii'oje'ctingV the Yloot beyond the free end oit the leg, means for maintaining' the 'free end of the leggi` in a predetermined relation to the bell crank, a lug on the Windmill frame disposed in the normal path of move` ment of the foot, and manually operable means connected with the leg adapted upon initial manipulat-iointo swing the foot to a position vneieby upon further movement thereof the foot vWill miss tlie lug, t-o alloiv for a full Viteatlieiing of the blades and stopping of the mill.

ORED GLSSON. 

